Machine for rolling tubes for pneumatic tires.



No. 658,901. atentedflct. 2, I900.

w. H. TA'NEY HILL. MACHINE FOR ROLLING TUBES FUR PNEUMATIC TIRES.

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No. 658,90I. Patented Oct. 2, I900.

w. H. TANEYHILL. v MACHINE FOR ROLLING TUBES FOR PNEUMATIC TIRES.

(Application filed Aug. 4, 1900.) (No Model.) 9 Sheets-Sheet 2.

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No. 658,90I. Patented Oct. 2, I900. W. H. TANEYHILL.

MACHINE FOR ROLLING TUBES FOR PNEUMATIC TIRES.

(Application filed Aug. 4, 1900.;

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No. 658,901. 7 Patented Oct. 2. I900.

W. H. TANEYHILL. MACHINE FOR ROLLING TUBES FOR PNEUMATIC TIRES.

(Application filed Aug. 4, 1900.)

(No Model.) 9 Sheets-Sheet 4.

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w. H TANEYHILL.

MACHINE Fon BOLLING'TUBES FOR PNEUMATIC TIRES.

(Application filed Aug. 4, 1900.)

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W. H. TANEYHILL. MACHINE FOR ROLLING TUBES FOR PNEUMATIC TIRES.

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No.658 ,90l- Patented U01. 2, I900.

- W. H. TANEY'HILL.

MACHINE FOB ROLLING TUBES FORPNEUMATIG TIRES.

I *(Applicatidn filed Aug. 4. 1900.) ("Q Model.) 9 Sheets-Sheet 8.

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No. 658,90l. i Patentedfflct. 2', 1900.

W. H. TANEYHILL. v MACHINE FOR ROLLING TUB'ES'FOR PNEUMATIC TIRES.

(Application filed Aug. 4, 1900.)

(No Model.) I 9 Sheets$h8ot 9.

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WILLIAM H. TANEYHILL, OF COLUMBUS, OHIO, ASSIGNOR OF ONE-HALF TO,

'DAVID B. AUNGST, OF AKRON, OHIO.

MACHINE FOR ROLLING TUBES FOR PNEUMATIC 'imE'sl SPECIFICATIONformingpart of Letters Patent No. 658.901. dated October 2, 1906.

Application filed Angust, 1900- Serial No. 25,929. lNO mOdeL) T aZZ whomit may concern.- of hand labor ofiers a serious obstacle to theBeitknown thatLWILLIAM H.TANEYHILL, manufacture of the articles for themarket a citizen of the United States, residing at 00- where competitionin trade is strong, and in lumbns, in the county of Franklin and Stateboth the method of placing the valve-stem is of Ohio, have invented acertain new and usetedious and expensive and in the first is insefulImprovement in Machines for Rolling cure and imperfect, oftenresultinginadefeet Tubes for Pneumatic Tires, of whichthe folin the tireat that point. lowing is a specification. One object of my invention isto overcome My invention has relation to improvements these objectionsby producing a machine [O in machines for rolling tubes to formpneuwhich shall automatically roll these tubes matic tires for vehiclesthat consist of an in-- with a progressive movement, shall during nertube of rubber on which are successively the process cause groovedpressure-rollers to rolled additional layers of rubber-saturatedreciprocally repeatedly travel along the tire fabric and covered with anenvelop of rubon the mandrel from end to end,and shall raise 15 her, thewhole to be provided with a valveto clear the tire at each partialrevolution of stem and to have their ends joined previous the mandrel toprevent. abrasion of the layers. to vulcanization to form an endlesstube sus- A further object is to roll the flange of the ceptible ofbeing inflated. Heretofore two valve-stem between the layers of the tireand methods have been generally adopted in the .to locate it between theends instead of at or 20 construction of these tubes, in one of whichnear the joint, and a final object is to make the mandrel bearingtheinner tubeis revolved the apparatus self-discharging when the rollonits axial line, and the successive layers are ing is completed. broughtedgewiseto it and by its motion rolled To the aforesaid objects myinvention conaround it, being pressed in the operation by sists in thepeculiar and novel construction,

25 side rollers parallel and of equal length with arrangement, andcombination of parts herethe mandrel. In the other the mandrelbearinafter described, and then specifically pointingtheinner tubeisrolled by hand on the suced out in the claims, reference being had to'cessive layers, the layers being pressed to-,theaccompanyingdrawings,formingapart of gether to cohere by a groovedroller passed by this specification.

30 hand from end to end of the mandrel during in the accompanyingdrawings, in which the process of rolling. In the first method similarreference characters indicate like holes are left in the successivelayers of the parts in the different figures, Figure 1 is a tire for thevalve-stem, which is inserted and side elevation presenting a generalView of cemented in place by hand near the union of my machine, with themain shaft-in section 5 the ends during the process of joining them atthe front face of the supporting-leg; Fig. 2, and after the mandrel hasbeen removed from an end elevation, enlarged, looking from the withinthe tire. In the second method each left'of Fig. 1; Fig. 3, a plan,enlarged, of the plyof fabric is sufficient to go around the manlefthalf; Fig: 4, a plan, enlarged, of the right drel and lap and theopening for the valvehalf; Fig. 5, a side elevation, enlarged, of the 40stem is formed by cutting notches in the edges left half with a portionof the frame broken of that'lap, the valve-stem being-inserted in awayto show the parts behind it; Fig. 6, a this opening and cemented inplace. Objec-' similarelevation of the right half; Fig. 7, a tion hasbeen found to both methods because section, similarly enlarged, at theline a: a", of in the first small quantities of air or moisture Fig. 1;Fig. 8, a section on the same scale at 45 remain between the layers,that expand in the the line y 'y of Fig. 1; Fig. 9, a series of dia- 5process of vulcanization, therebycausing blisgrams showing the differentpositions of the ters, that prevent the layers of the tire coherrollersin their operation of rolling about the ing at all points, and as aresult the security valve-stem; Fig. 10, a perspective of parts ofanddurabilityofthetire areimpaired. Iuthe the guides for theroller-carriage; Fig. 11 of,

50 second the expense due to the employment Sheet 6, an enlarged centralsection of one of too the heads for holding the ends of the mandrel, andFig. 12 an enlarged view of the catch for operating the discharge-lever.

Referring to the figures, 1 2 are two oppositely-disposed parallel railssupported, respectively, by legs 3 4 56, the inner opposite edges ofwhich rails are grooved to form ways for a sliding carriage andconstitute the housing for the machine. Fitted to slide in the groovesin this housing is a rectangular frame 7, with side and end pieces, butopen in the center.

To avoid confusion, the arrangement of parts as shown in Fig. 1 will befollowed where they are designated as being at the right or left.

From the left end piece of the frame 7 arise two posts 8 9, and from theright end piece two similar posts 10 11, which posts are accuratelybored parallel with the housing to. form bearings for shafts,hereinafter described.

Near the left end of the housing and unit,- ing the rails 1 and 2 is abridge 12, and near the opposite end a similar bridge 13, consisting ofupright posts and a connecting-beam. integral therewith, which bridgesare enlarged and circular at the corners and bored in alinement with theopeningsin the posts 8, 9, 10, and 11 to form in the same mannershaft-bearings, and in each pair of bearings thus constituted areseverally journaled short shafts 14, 15, 16, and 17, respectively, thelast two capable of longitudinal movement in the bearings. On the shaft14 is secured a collar 18, between which and the bridge 12 is a coiledspring 19, that constantly tends to push the shaftand carriage 7 to theleft. A ratchetwheel on the shaft 15 fulfils the same function withreference to a coiled spring 21, interposed between it and the bridge12. On the shafts l6 and 17 there are like collars 22 23, respectively,between which and the posts 10 and 11 coiled springs 24 25 constantlytend to push these shafts to the left. On the ends of the shafts 14, 15,16, and 17 that extend toward the center of the machine are placed heads26, 27, 28, and 29, each similar in construction and shown in enlargedsection in Fig. 11. The projecting end of each, head has aconically-tapering opening to receive and accurately center the end ofthe tiremandrel, and back of this a recess 31 with a transverse slotuniting them. I11 the recess 31 is a cup-shaped piston 32, having ablade 33, that passes through the slot into the conical opening 30, andthis piston is constantly pressed outward by a coiled spring 34, theobject and purpose of which is to eject the end of the tire mandrel whenthe rolling process is completed, as hereinafter described.

On theshafts14 15 are respectively mounted like gears 35 and 36,thatmesh with each other, and; thus cause the shafts to move in unison.

To produce intermittent revolution of the gears 35 and 36 and thetire-bearing mandrels, as well as to operate the tire-rollershereinafter described, there is journaled in the leg 3 and a bracketsecured thereon a shaft 37, hearing a driving-pulley 38 and a pinion 39,that meshes in a gear 40. Connected and running with this gear 40 is acam-wheel 41 for a purpose to be stated, and a trip-wheel 42, arrangedto repeatedly raise a pawl-bar 43, which bears at its upper end apivoted pawl 44 to engage the ratchet-wheel 20 and cause a partialrevolution of the shaft 15 and gear 36 at the moment that thepressure-rollers are raised from contact with the tire, as hereinafterstated.

Across the housing near but toward the center from the bridges 12 13 aretwo fixed GIOSSrbfiIS 45 46, in the central parts of which are widerectangular notches to form seats for the roller-frame. Thisroller-frame (partially shown in Fig. 10) consists of two bifurcateduprights 47 48, united at the bottom by parallel rails. 49 50, similarlygrooved in their adjacent faces to form ways for a slidingroller-bearing carriage. The roller-frame rests in, the notches in thecross-bars 45 46 and is secured against longitudinal movement, but isfree to move vertically therein for a short distance for apurpose to bestated. The tops of the uprights 47 48 are similarly beveled from themiddle in each direction and are connected on each side by similarparallel barsv 51 52, bearing wedge-blocks 53 54, with their pointstoward the center. Beside each bar 51 52 liesa bar 55 56, respectivelyprovided with rounded bosses 57 58. The ends of these bars 55 56 restand slide in ways in the beveled tops of the uprights 47 48, and eachpair is connected at each end With the T-head of asliding bolt 59.Theinner ends of these bolts 59 rest against a. diamond-shaped head of avertically-sliding bolt 60. The arrangement of these parts is such that,by sliding the bolt 60 upward the bars 55 56 are forced outward in theirways and return when the bolts 60 descend. To raise these bolts 60,there arejournaled across the uprights 47 48 short shafts 61 62,respectively, each bearing cams 63 64 to engage and raise the bolts 60.The left shaft 61 has a depending crank-arm bent at the lower end, asshown in Fig. 7, to engage and be rocked by a, pin 65, projecting fromthe back face of the gear 40. The right shaft 62 has a like but shortercrank-arm connected and simultaneously moved with the shaft 61 by a,connecting-rod 66.

The roller-bearing carriage consists of two base-pieces 6768,(shown,respectively,in Figs. 7 and 8,) fitted to slide in the waysformed by the grooves in the rails 49 50, from each of which arise posts69 70, respectively, (also shown in Figs- 7 and 8,) united near the topby a rod 71 lengthwise of the machine. From the base-piece 67 a rigidarm 72 depends, to which is pivotally attached one endof aconnecting-rod 73, the other end being journaled on a wrist-pin 74 on awheel on the shaft 37. Hence by revolvingthe shaft 37 the rollerhearingcarriage will be moved reciprocally in its ways just described.

Secured in the top at each end of the rollerbearing carriage are twohollow cylindrical cases 76, in each of which is a sliding rod 77, thatextends from the lower end and bears a grooved roller 78, and each isconstantly pressed downward by a coiled spring 79.

These grooved rollers are so arranged to run on the tire-bearingmandrels when the latter are secured in the heads 26 27 28 29. The upperends of the rods 77 also project above the cases 76, and each is reducedto pass severally between the bars 51 52 oneach side of the machine andis bent to one side to form a finger to extend over and run along thesurface of either to engage the wedgeblocks 53 54 and bosses 57 58 as itis turned to either side. One pair of these fingers is turned upward andthe other downward, as will be noticed in Fig. 1 and also by comparingFigs. 7 and 8, the object and purpose of which arrangement'is to permitthe travel of each pair of rollers to overlap at the center of thecourse and return without interruption from these wedges. This will beunderstood by reference to Fig. 10, when it will be noticed that thepoints of the wedge-blocks 53 54 point to the right and the block 115 onthe right portion of the rail 52 is to the left, a corresponding block(not'shown) on the absent part of the rail 51 pointing the same way. Thetravel of the carriage is such that one of the fingers will run fromblock 54 to block 115 at each stroke, the opposite finger travelingbetween the block 53 and its'companion block. (Not shown.)

Journaled in hangers 81 at the left end of the housing is a shaft 82, onone end of which is a crank-arm 83, hearing a roller 84, arranged to runon the cam-wheel 41. Near the center of the shaft 82 is a finger 85, thefree end of which engages an abutment-plate 86, and as the shaft 82 isrocked forces the sliding frame 7 gradually to the right, whence it isreturned as the cam-wheel revolves farther by force of the springs 19and 21, the object and purpose of which movement is to so move thetire-bearing mandrels as to permit the rollers 78 to press the tireabout the valvestem without encountering and dis-lodging it, ashereinafter described.

Mounted on the shaft of the gearwheel 40, cam-wheel 4l,'and trip-wheel42 is a pinion 87, that meshes in a gear-wheel 88, mounted on awrist-pin 89, having on its face two concentric ridges 91, the innerslightly preceding the outer, but operating substantially at the sametime; The first, 90, engages a roller on the depending end of a bar 92,ar-

ranged to move crosswise of the housing and constantly drawn inward byaspring 93. One arm of a bell-crank 94 is pivotally connected with thisbar, the other arm being connected by a rod 95 with an arm of a likebell-crank 'pleted.

96 at the right end of the machine, which in turn is pivotally connectedwith bar 97, similarly arranged to slide across the housing. Pivoted inthe cross-bars 45 46 and below the ends of the sliding frame 47 and 48are pairs of rocking cams 98, with their rounded ends arranged to engagethe sliding frame 47 and 48 and their lower ends pivoted to the bars 92and 97, respectively, and so arranged that when the bars 92 97 are drawnto the front they operate to raise the roller-bearing carriage and thusdraw the rollers 78 away from the tire-bearing mandrels and to releaseit and permit it to descend when they move inward. These parts are soadjusted as to raise the roller-bearing carriage when the tube is com-The second ridge 91 engages a roller on the depending end of a short bar99, similarly arranged to slide crosswise of the housing, the other endof which bar is pivoted to a bent lever 100. The opposite end of thelever 100 is connected, by means of a link 101, to one end of a slidingrod 102, constantly pressed to the left by a spring 103. The right endof the rod 102 is cut in on one side, leaving an abrupt shoulder and areduced end bent toward the side of the shoulder and beveled at itspoint in line with its back edge, as shown in Fig. 12. This rod is soarranged that unless diverted it would move toward the right withoutencountering the rocking frame; but to cause such encounter there islocated opposite said frame a wedge-shaped block 113, arranged to beengaged by the beveled end of the rod 102 and move its end back towardthe frame 104, which it encounters and rocks to the right. Thisarrangement permits the frame 104 to rock to the left and right as theframe 7 is reciprocated in the housing until the determined time forreleasing the mand rel,when it rocks the frame 104 to the right. Thearms of this frame are forked to embrace the right ends of the shafts 161.7 and are slotted to receive pins 105, that are secured in said ends,and they operate to draw the shafts to the right when the rod 102 ispushed to the right by the operation of the ridge 91 and lever 100, andthus release the mandrels.

' On the rails 1 and 2 of the housing are located posts 106, providedwith opposite alternately-disposed rollers 107 to serve as supports forthe tire-bearing mandrel at the point where the valve-stem is locatedand with space between them to permit the valve-stem to pass as themandrel is revolved and to firmly press the layers of the tire togetherclose to said stem.

On each side of the housing, supported by on the mandrel, and thusprevents air from being inclosed under it.

The construction of the machine being as described, its operation is asfollows: Inner tubes being placed on the mandrels 110 111 and motionbeing given to the machine by the driving-pulley 38, the mandrels areplaced therein by inserting their ends in the conical openings in theheads 26 28 and 27 29, respectively, by forcing heads 28 29 back farenough to permit the ends of the mandrels to enter, where they areretained by force of the springs 24 and 25. The valve-stems 112 are thenplaced on the tubes on the mandrels about midway between their ends, sothat the opening will register with an opening in the inner tube andwhere they are retained by the sticky character of the rubber asprepared for vulcanization. The rubber saturated fabric is cut in longstrips or bands, square at their ends, of such width as to roll onceabout the mandrel and lap, and the desired number for a tire beingplaced to rest on the shelves 109 the edge of one strip is led forwardto rest on the tube on the mandrel, when by a slight pressure by theoperator it adheres and as the mandrel is progressively revolved iswound thereon, and this process is continued until the desired thicknessis attained. The parts are so adjusted that immediately before thefabric commences to wind on the tube-bearing mandrel the carriagecarrying the grooved rollers 78, operated by the connecting-rod 73 andmoving reciprocally lengthwise of the mandrel and the roller-frame, isby means of the cams 98 permitted to descend to rest in the notches inthe cross-bars 45 46, thus allowing the rollers to rest on the tubebeing built up on the mandrel. These rollers are each adapted to cover asegment of the mandrel, and the relation of the trip-wheel 12, pawl 44;,and ratchet-wheel 20 are such that the mandrels are given a progressivepartial revolution at the end of each stroke of the rollers to present afresh segment of the tire to their action, this partial revolution beingslightly less than the width of the segment covered by the rollers, sothat each track slightly overlaps the one preceding. The distancebetween the pairs of rollers is less than their stroke, and hence thetrack of each pair will alternately overlap the track of the other pair.The movement of these rollers is such that both the pairs of rollerspass the center of the mandrel at each stroke-that is, both pairs ofrollers move past the center of the mandrel in each direction, so as tocompletely and evenly press every part-and this is continued exceptingin rolling the part about the valve-stem. In rolling the fabric on themandrel the strip is so adjusted that the valve-stem will lie in theline of the lap and thus these edges lie against it. In rolling the partabout the valve-stem the roller-carriage not only moves, but themandrels are also moved lengthwise, as will now be explained byreference to the diagrams in Fig. 9. These diagrams represent themandrel as being progressively revolved with the top moving backward andthe position A as the first with the valve-stem 112 projecting upwardand toward the front, but sufficiently at the side to prevent engagingthe rollers, which are indicated as having just completed their movementto the right and ready to commence the return stroke to the left. Duringthe return of the rollers to the left the sliding frame 7, supportingthe mandrels, is by means of the cam-wheel 41, crank-arm 83,shaft-finger 85, receding from the abutmentplate 86, carried to the leftby the springs 19 21 to the position shown in B, with the right rollerclose to the line of the valve-stem. At the end of each stroke the bentfingers on the upper ends of the roller-rods 77 run upon thewedge-blocks 53 54, and thus draw the rollers away from the mandrels.While the rollers are thus free from the mandrels, the latter are givena partial revolution by the pawl 44 and ratchet-wheel 20, ashereinbefore described, thereby permitting this movement withoutabrasion of the tire. This leaves the rollers in position 0, whence theymove to the right; but before completing the stroke the finger has againpushed the sliding frame 7 to the right, so that at the end of thestroke they occupy the position D, with the left roller close to thevalve-stem. On the return stroke the mandrel is again moved by the samemechanism to the left until at the end of the stroke the rollers occupythe position E. At the next stroke to the right the rollers pass closebeside the valve-stem 112 until at the beginning of the next stroke thevalve-stem is entirely out of the path of the rollers and the roller 84on the crank-arm 83 has followed the irregular part of thecam-wheel 41and again rests -on the circular portion of the wheel. By the foregoingoperation thetire has been rolled entirely about the valve-stem, thussecurely embedding it in the tire. The rollers78 then continue theirformer operation, rolling the remainder of the whole length of the tubeon the mandrel until the starting-point is reached, when ridge 91 on thewheel 88 engages the roller on the bar 92 and by means of the mechanismheretofore described raises the roller-frame, thus lifting thev rollers78 out of contact with the tube on the mandrel. Closely following thisoperation the ridge on the wheel 88 engages the roller on the bar 99 anddraws it outward,and by means of the bent lever 100, link 101, slidingrod 102, and rocking frame 104 draws back the shafts 16 and 17, thusreleasing the ends of the mandrels from the heads 26, 27, 28, and 29,upon which the blades 33 on the pistons 32 in said heads, operated bythe springs 34, eject the ends of the mandrels, which are then free to 4be removed and others substituted.

In the foregoing operation, which is for the construction of tubes forordinary pneumatic tires, the movable bars 56, bearing the bosses 57 58,perform no office and may be disconnected and removed. In constructingheavy tires for automobiles and like vehicles where nuts'are embedded inthe tire to hold the binding-bolts these parts are employed. In suchcases the bosses 57 58 are placed on the bars 55 56 with reference tothe location of the nuts in the tube on the mandrel, and hence as theroller-carriage travels along its reciprocating course the bent ends ofthe roller-rods 77 engage and ride over these bosses, thus raising therollers high enough to pass without disturbing the nuts.

I have shown the apparatus adapted for the simultaneous rolling of twotubes on parallel mandrels; but it will be apparent that it may bereadily adapted to the rolling of a single tire.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. In a machine for rolling tubes of the class specified, thecombination with means for detachably holdinga mandrel bearing an innertube, and for revolving it with an intermittent movement, and forpresenting successive layers of material to be wound thereon, ofpressure-rollers arranged to travel reciprocally on said mandrel at eachpause in its revolution,.and mechanism coacting with the revolvingmachinery to cause such movement substantially as shown and described.

2. In a machine for rolling tubes of the class specified, thecombination with means for 'detachably holding a mandrel bearing aninner tube, and for revolving it with an intermittent movement, andforpresentingsuccessive layers of material to be wound thereon, andpressure-rollers arranged to travel reciprocally on said mandrel at eachpause in its revolution, and mechanism coacting with the revolvingmachinery to cause such movement, of device to raise said rollers fromcontact with the tube being formed during the time of such partialrevolution, substantially as shown and described.

3. In a machine for rolling tubes of the class specified, thecombination with means for detachably holding a mandrel bearing an innertube, and for revolving it with an intermittent movement, and forpresenting successive layers of material to be wound thereon, ofpressure-rollers arranged to travel reciprocally on said mandrel at eachpause in its revolution, and mechanism coacting with the revolvingmachinery to bring said rollers into contact with said material on saidmandrel simultaneously with the winding of the successive layersthereon, and to place them out of contact after a determinate number ofpartial revolutions substantially as shown and described.

4:. In a machine for rolling tubes of the class specified having meansfor detachably holding a mandrel bearing an inner tube, and revolving itwith an intermittent movement,

a reciprocating roller-carriage having sliding gers extending from saidroller-shafts in combination with wedges to be engaged thereby at theend of each movement of said carriage, to raise said rollers from themandrel, substantially as shown and described.

5. In a machine for rolling tubes of the class specified, thecombination with pressure-rollers arranged to travel reciprocally alonga mandrel to hold the tube, of oppositely-disposed spring-pressed headsto receive the ends of said mandrel, and mechanism to causeintermittentrevolution of one of said heads to revolve said mandrel, substantiallyas shown and described.

6. In a machine for rolling tubes of the class specified, thecombination With pressure-rollers arranged to travel reciprocally alonga mandrel to hold the tube, of oppositely-disposed slidingspring-pressed heads to receive the ends of the mandrel, mechanism tocause intermittent revolution of one of said heads to revolve said'mandrel, and coacting mechanism to withdraw one of said heads after adeterminate number of revolutions of said mandrel to permit its removalsubstantially as shown and described.

7. In a machine for rolling tubes of the class specified, thecombination with presssure-rollers arranged to travel reciprocally alongthe mandrel to hold the tube, of oppositely-disposed spring-pressedheads to re-- ceive the ends of the mandrel, mechanism to causeintermittent revolution of one of said heads to revolve the mandrel,coacting mechanism to withdraw one of said heads after a determinatenumber of revolutions of said mandrel, and a spring-pressed blade in theopposite head to eject the end of the mandrel therefrom, substantiallyas shown and described.

8. In a machine for rolling tubes of the class specified, thecombination with pressure-rollers arranged to travel reciprocally alonga mandrel to hold the tube, of a sliding frame arranged to movereciprocally in a course parallel with the course of said rollers,having spring-pressed heads to receive the ends of said mandrel,mechanism to operate said rollers, coacting mechanism to causeintermittent revolution of said mandrel, and devices to move said framereciprocally during a portion of the revolution of said mandrel toprevent the rollers from engaging the valve-stem, substantially as shownand described.

9. In a machine for rolling tubes of the class specified adapted toembed scre w-threaded nuts therein, having means for detachably holdinga mandrel bearing an inner tube and for revolving it with anintermittent move- -ment a reciprocating roller-carriage having slidingspring-pressed rollers arranged to run reciprocally on said mandrel andfingers extending from said roller-shafts, in combina- IIO itsrevolution, and coacting machinery to cause such movement, of fixedrollers adjusted to bear against said mandrel and to press the tubesthereon adjacent to the valvestem, substantially as shown and described.

In testimony that I claim the above I hereunto setmy hand in thepresence of two subscribing Witnesses.

WILLIAM H. TANEYHTLL.

In presence ot' C. P. HUMPHREY, G. E. HUMPHREY.

